| Year | Value (%) |
|---|---|
|
2021 |
0.69 |
|
2020 |
0.7 |
|
2019 |
0.7 |
|
2018 |
0.7 |
|
2017 |
0.7 |
|
2016 |
0.69 |
|
2015 |
0.71 |
|
2014 |
0.73 |
|
2013 |
0.72 |
|
2012 |
0.72 |